~kiwec/ke

ke/test/acutest.h -rw-r--r-- 26.9 KiB
1cc8481d — Wolf Clément Fix compilation 3 years ago
                                                                                
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
/*
 * Acutest -- Another C/C++ Unit Test facility
 * <http://github.com/mity/acutest>
 *
 * Copyright (c) 2013-2017 Martin Mitas
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef ACUTEST_H__
#define ACUTEST_H__


/************************
 *** Public interface ***
 ************************/

/* By default, "acutest.h" provides the main program entry point (function
 * main()). However, if the test suite is composed of multiple source files
 * which include "acutest.h", then this causes a problem of multiple main()
 * definitions. To avoid this problem, #define macro TEST_NO_MAIN in all
 * compilation units but one.
 */

/* Macro to specify list of unit tests in the suite.
 * The unit test implementation MUST provide list of unit tests it implements
 * with this macro:
 *
 *   TEST_LIST = {
 *       { "test1_name", test1_func_ptr },
 *       { "test2_name", test2_func_ptr },
 *       ...
 *       { 0 }
 *   };
 *
 * The list specifies names of each test (must be unique) and pointer to
 * a function implementing it. The function does not take any arguments
 * and has no return values, i.e. every test function has to be compatible
 * with this prototype:
 *
 *   void test_func(void);
 */
#define TEST_LIST              const struct test__ test_list__[]


/* Macros for testing whether an unit test succeeds or fails. These macros
 * can be used arbitrarily in functions implementing the unit tests.
 *
 * If any condition fails throughout execution of a test, the test fails.
 *
 * TEST_CHECK takes only one argument (the condition), TEST_CHECK_ allows
 * also to specify an error message to print out if the condition fails.
 * (It expects printf-like format string and its parameters). The macros
 * return non-zero (condition passes) or 0 (condition fails).
 *
 * That can be useful when more conditions should be checked only if some
 * preceding condition passes, as illustrated in this code snippet:
 *
 *   SomeStruct* ptr = allocate_some_struct();
 *   if(TEST_CHECK(ptr != NULL)) {
 *       TEST_CHECK(ptr->member1 < 100);
 *       TEST_CHECK(ptr->member2 > 200);
 *   }
 */
#define TEST_CHECK_(cond,...)  test_check__((cond), __FILE__, __LINE__, __VA_ARGS__)
#define TEST_CHECK(cond)       test_check__((cond), __FILE__, __LINE__, "%s", #cond)


/* printf-like macro for outputting an extra information about a failure.
 *
 * Note it does not output anything if there was not (yet) failed condition
 * in the current test. Intended use is to output some computed output
 * versus the expected value, e.g. like this:
 *
 *   if(!TEST_CHECK(produced == expected)) {
 *       TEST_MSG("Expected: %d", expected);
 *       TEST_MSG("Produced: %d", produced);
 *   }
 *
 * The macro can deal with multi-line output fairly well. It also automatically
 * adds a final new-line if there is none present.
 */
#define TEST_MSG(...)          test_message__(__VA_ARGS__)

/* Maximal output per TEST_MSG call. Longer messages are cut.
 * You may define another limit prior including "acutest.h"
 */
#ifndef TEST_MSG_MAXSIZE
    #define TEST_MSG_MAXSIZE   1024
#endif


/**********************
 *** Implementation ***
 **********************/

/* The unit test files should not rely on anything below. */

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#if defined(unix) || defined(__unix__) || defined(__unix) || defined(__APPLE__)
    #define ACUTEST_UNIX__      1
    #include <errno.h>
    #include <unistd.h>
    #include <sys/types.h>
    #include <sys/wait.h>
    #include <signal.h>
#endif

#if defined(__gnu_linux__)
    #define ACUTEST_LINUX__     1
    #include <fcntl.h>
    #include <sys/stat.h>
#endif

#if defined(_WIN32) || defined(__WIN32__) || defined(__WINDOWS__)
    #define ACUTEST_WIN__       1
    #include <windows.h>
    #include <io.h>
#endif

#ifdef __cplusplus
    #include <exception>
#endif


/* Note our global private identifiers end with '__' to mitigate risk of clash
 * with the unit tests implementation. */


#ifdef __cplusplus
    extern "C" {
#endif


struct test__ {
    const char* name;
    void (*func)(void);
};

extern const struct test__ test_list__[];

int test_check__(int cond, const char* file, int line, const char* fmt, ...);
void test_message__(const char* fmt, ...);


#ifndef TEST_NO_MAIN

static char* test_argv0__ = NULL;
static size_t test_list_size__ = 0;
static const struct test__** tests__ = NULL;
static char* test_flags__ = NULL;
static size_t test_count__ = 0;
static int test_no_exec__ = -1;
static int test_no_summary__ = 0;
static int test_skip_mode__ = 0;

static int test_stat_failed_units__ = 0;
static int test_stat_run_units__ = 0;

static const struct test__* test_current_unit__ = NULL;
static int test_current_already_logged__ = 0;
static int test_verbose_level__ = 2;
static int test_current_failures__ = 0;
static int test_colorize__ = 0;

#define TEST_COLOR_DEFAULT__            0
#define TEST_COLOR_GREEN__              1
#define TEST_COLOR_RED__                2
#define TEST_COLOR_DEFAULT_INTENSIVE__  3
#define TEST_COLOR_GREEN_INTENSIVE__    4
#define TEST_COLOR_RED_INTENSIVE__      5

static int
test_print_in_color__(int color, const char* fmt, ...)
{
    va_list args;
    char buffer[256];
    int n;

    va_start(args, fmt);
    vsnprintf(buffer, sizeof(buffer), fmt, args);
    va_end(args);
    buffer[sizeof(buffer)-1] = '\0';

    if(!test_colorize__) {
        return printf("%s", buffer);
    }

#if defined ACUTEST_UNIX__
    {
        const char* col_str;
        switch(color) {
            case TEST_COLOR_GREEN__:             col_str = "\033[0;32m"; break;
            case TEST_COLOR_RED__:               col_str = "\033[0;31m"; break;
            case TEST_COLOR_GREEN_INTENSIVE__:   col_str = "\033[1;32m"; break;
            case TEST_COLOR_RED_INTENSIVE__:     col_str = "\033[1;31m"; break;
            case TEST_COLOR_DEFAULT_INTENSIVE__: col_str = "\033[1m"; break;
            default:                                col_str = "\033[0m"; break;
        }
        printf("%s", col_str);
        n = printf("%s", buffer);
        printf("\033[0m");
        return n;
    }
#elif defined ACUTEST_WIN__
    {
        HANDLE h;
        CONSOLE_SCREEN_BUFFER_INFO info;
        WORD attr;

        h = GetStdHandle(STD_OUTPUT_HANDLE);
        GetConsoleScreenBufferInfo(h, &info);

        switch(color) {
            case TEST_COLOR_GREEN__:             attr = FOREGROUND_GREEN; break;
            case TEST_COLOR_RED__:               attr = FOREGROUND_RED; break;
            case TEST_COLOR_GREEN_INTENSIVE__:   attr = FOREGROUND_GREEN | FOREGROUND_INTENSITY; break;
            case TEST_COLOR_RED_INTENSIVE__:     attr = FOREGROUND_RED | FOREGROUND_INTENSITY; break;
            case TEST_COLOR_DEFAULT_INTENSIVE__: attr = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY; break;
            default:                                attr = 0; break;
        }
        if(attr != 0)
            SetConsoleTextAttribute(h, attr);
        n = printf("%s", buffer);
        SetConsoleTextAttribute(h, info.wAttributes);
        return n;
    }
#else
    n = printf("%s", buffer);
    return n;
#endif
}

int
test_check__(int cond, const char* file, int line, const char* fmt, ...)
{
    const char *result_str;
    int result_color;
    int verbose_level;

    if(cond) {
        result_str = "ok";
        result_color = TEST_COLOR_GREEN__;
        verbose_level = 3;
    } else {
        if(!test_current_already_logged__  &&  test_current_unit__ != NULL) {
            printf("[ ");
            test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "FAILED");
            printf(" ]\n");
        }
        result_str = "failed";
        result_color = TEST_COLOR_RED__;
        verbose_level = 2;
        test_current_failures__++;
        test_current_already_logged__++;
    }

    if(test_verbose_level__ >= verbose_level) {
        va_list args;

        printf("  ");

        if(file != NULL) {
            if(test_verbose_level__ < 3) {
#ifdef ACUTEST_WIN__
                const char* lastsep1 = strrchr(file, '\\');
                const char* lastsep2 = strrchr(file, '/');
                if(lastsep1 == NULL)
                    lastsep1 = file-1;
                if(lastsep2 == NULL)
                    lastsep2 = file-1;
                file = (lastsep1 > lastsep2 ? lastsep1 : lastsep2) + 1;
#else
                const char* lastsep = strrchr(file, '/');
                if(lastsep != NULL)
                    file = lastsep+1;
#endif
            }
            printf("%s:%d: Check ", file, line);
        }

        va_start(args, fmt);
        vprintf(fmt, args);
        va_end(args);

        printf("... ");
        test_print_in_color__(result_color, result_str);
        printf("\n");
        test_current_already_logged__++;
    }

    return (cond != 0);
}

void
test_message__(const char* fmt, ...)
{
    char buffer[TEST_MSG_MAXSIZE];
    char* line_beg;
    char* line_end;
    va_list args;

    if(test_verbose_level__ < 2)
        return;

    /* We allow extra message only when something is already wrong in the
     * current test. */
    if(!test_current_already_logged__  ||  test_current_unit__ == NULL)
        return;

    va_start(args, fmt);
    vsnprintf(buffer, TEST_MSG_MAXSIZE, fmt, args);
    va_end(args);
    buffer[TEST_MSG_MAXSIZE-1] = '\0';

    line_beg = buffer;
    while(1) {
        line_end = strchr(line_beg, '\n');
        if(line_end == NULL)
            break;
        printf("    %.*s\n", (int)(line_end - line_beg), line_beg);
        line_beg = line_end + 1;
    }
    if(line_beg[0] != '\0')
        printf("    %s\n", line_beg);
}

static void
test_list_names__(void)
{
    const struct test__* test;

    printf("Unit tests:\n");
    for(test = &test_list__[0]; test->func != NULL; test++)
        printf("  %s\n", test->name);
}

static void
test_remember__(int i)
{
    if(test_flags__[i])
        return;
    else
        test_flags__[i] = 1;

    tests__[test_count__] = &test_list__[i];
    test_count__++;
}

static int
test_name_contains_word__(const char* name, const char* pattern)
{
    static const char word_delim[] = " \t-_.";
    const char* substr;
    size_t pattern_len;
    int starts_on_word_boundary;
    int ends_on_word_boundary;

    pattern_len = strlen(pattern);

    substr = strstr(name, pattern);
    while(substr != NULL) {
        starts_on_word_boundary = (substr == name || strchr(word_delim, substr[-1]) != NULL);
        ends_on_word_boundary = (substr[pattern_len] == '\0' || strchr(word_delim, substr[pattern_len]) != NULL);

        if(starts_on_word_boundary && ends_on_word_boundary)
            return 1;

        substr = strstr(substr+1, pattern);
    }

    return 0;
}

static int
test_lookup__(const char* pattern)
{
    int i;
    int n = 0;

    /* Try exact match. */
    for(i = 0; i < (int) test_list_size__; i++) {
        if(strcmp(test_list__[i].name, pattern) == 0) {
            test_remember__(i);
            n++;
            break;
        }
    }
    if(n > 0)
        return n;

    /* Try word match. */
    for(i = 0; i < (int) test_list_size__; i++) {
        if(test_name_contains_word__(test_list__[i].name, pattern)) {
            test_remember__(i);
            n++;
        }
    }
    if(n > 0)
        return n;

    /* Try relaxed match. */
    for(i = 0; i < (int) test_list_size__; i++) {
        if(strstr(test_list__[i].name, pattern) != NULL) {
            test_remember__(i);
            n++;
        }
    }

    return n;
}

/* Call directly the given test unit function. */
static int
test_do_run__(const struct test__* test)
{
    test_current_unit__ = test;
    test_current_failures__ = 0;
    test_current_already_logged__ = 0;

    if(test_verbose_level__ >= 3) {
        test_print_in_color__(TEST_COLOR_DEFAULT_INTENSIVE__, "Test %s:\n", test->name);
        test_current_already_logged__++;
    } else if(test_verbose_level__ >= 1) {
        int n;
        char spaces[48];

        n = test_print_in_color__(TEST_COLOR_DEFAULT_INTENSIVE__, "Test %s... ", test->name);
        memset(spaces, ' ', sizeof(spaces));
        if(n < (int) sizeof(spaces))
            printf("%.*s", (int) sizeof(spaces) - n, spaces);
    } else {
        test_current_already_logged__ = 1;
    }

#ifdef __cplusplus
    try {
#endif

        /* This is good to do for case the test unit e.g. crashes. */
        fflush(stdout);
        fflush(stderr);

        test->func();

#ifdef __cplusplus
    } catch(std::exception& e) {
        const char* what = e.what();
        if(what != NULL)
            test_check__(0, NULL, 0, "Threw std::exception: %s", what);
        else
            test_check__(0, NULL, 0, "Threw std::exception");
    } catch(...) {
        test_check__(0, NULL, 0, "Threw an exception");
    }
#endif

    if(test_verbose_level__ >= 3) {
        switch(test_current_failures__) {
            case 0:  test_print_in_color__(TEST_COLOR_GREEN_INTENSIVE__, "  All conditions have passed.\n\n"); break;
            case 1:  test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "  One condition has FAILED.\n\n"); break;
            default: test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "  %d conditions have FAILED.\n\n", test_current_failures__); break;
        }
    } else if(test_verbose_level__ >= 1 && test_current_failures__ == 0) {
        printf("[   ");
        test_print_in_color__(TEST_COLOR_GREEN_INTENSIVE__, "OK");
        printf("   ]\n");
    }

    test_current_unit__ = NULL;
    return (test_current_failures__ == 0) ? 0 : -1;
}

#if defined(ACUTEST_UNIX__) || defined(ACUTEST_WIN__)
/* Called if anything goes bad in Acutest, or if the unit test ends in other
 * way then by normal returning from its function (e.g. exception or some
 * abnormal child process termination). */
static void
test_error__(const char* fmt, ...)
{
    va_list args;

    if(test_verbose_level__ == 0)
        return;

    if(test_verbose_level__ <= 2  &&  !test_current_already_logged__  &&  test_current_unit__ != NULL) {
        printf("[ ");
        test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "FAILED");
        printf(" ]\n");
    }

    if(test_verbose_level__ >= 2) {
        test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "  Error: ");
        va_start(args, fmt);
        vprintf(fmt, args);
        va_end(args);
        printf("\n");
    }
}
#endif

/* Trigger the unit test. If possible (and not suppressed) it starts a child
 * process who calls test_do_run__(), otherwise it calls test_do_run__()
 * directly. */
static void
test_run__(const struct test__* test)
{
    int failed = 1;

    test_current_unit__ = test;
    test_current_already_logged__ = 0;

    if(!test_no_exec__) {

#if defined(ACUTEST_UNIX__)

        pid_t pid;
        int exit_code;

        pid = fork();
        if(pid == (pid_t)-1) {
            test_error__("Cannot fork. %s [%d]", strerror(errno), errno);
            failed = 1;
        } else if(pid == 0) {
            /* Child: Do the test. */
            failed = (test_do_run__(test) != 0);
            exit(failed ? 1 : 0);
        } else {
            /* Parent: Wait until child terminates and analyze its exit code. */
            waitpid(pid, &exit_code, 0);
            if(WIFEXITED(exit_code)) {
                switch(WEXITSTATUS(exit_code)) {
                    case 0:   failed = 0; break;   /* test has passed. */
                    case 1:   /* noop */ break;    /* "normal" failure. */
                    default:  test_error__("Unexpected exit code [%d]", WEXITSTATUS(exit_code));
                }
            } else if(WIFSIGNALED(exit_code)) {
                char tmp[32];
                const char* signame;
                switch(WTERMSIG(exit_code)) {
                    case SIGINT:  signame = "SIGINT"; break;
                    case SIGHUP:  signame = "SIGHUP"; break;
                    case SIGQUIT: signame = "SIGQUIT"; break;
                    case SIGABRT: signame = "SIGABRT"; break;
                    case SIGKILL: signame = "SIGKILL"; break;
                    case SIGSEGV: signame = "SIGSEGV"; break;
                    case SIGILL:  signame = "SIGILL"; break;
                    case SIGTERM: signame = "SIGTERM"; break;
                    default:      sprintf(tmp, "signal %d", WTERMSIG(exit_code)); signame = tmp; break;
                }
                test_error__("Test interrupted by %s", signame);
            } else {
                test_error__("Test ended in an unexpected way [%d]", exit_code);
            }
        }

#elif defined(ACUTEST_WIN__)

        char buffer[512] = {0};
        STARTUPINFOA startupInfo;
        PROCESS_INFORMATION processInfo;
        DWORD exitCode;

        /* Windows has no fork(). So we propagate all info into the child
         * through a command line arguments. */
        _snprintf(buffer, sizeof(buffer)-1,
                 "%s --no-exec --no-summary --verbose=%d --color=%s -- \"%s\"",
                 test_argv0__, test_verbose_level__,
                 test_colorize__ ? "always" : "never", test->name);
        memset(&startupInfo, 0, sizeof(startupInfo));
        startupInfo.cb = sizeof(STARTUPINFO);
        if(CreateProcessA(NULL, buffer, NULL, NULL, FALSE, 0, NULL, NULL, &startupInfo, &processInfo)) {
            WaitForSingleObject(processInfo.hProcess, INFINITE);
            GetExitCodeProcess(processInfo.hProcess, &exitCode);
            CloseHandle(processInfo.hThread);
            CloseHandle(processInfo.hProcess);
            failed = (exitCode != 0);
        } else {
            test_error__("Cannot create unit test subprocess [%ld].", GetLastError());
            failed = 1;
        }

#else

        /* A platform where we don't know how to run child process. */
        failed = (test_do_run__(test) != 0);

#endif

    } else {
        /* Child processes suppressed through --no-exec. */
        failed = (test_do_run__(test) != 0);
    }

    test_current_unit__ = NULL;

    test_stat_run_units__++;
    if(failed)
        test_stat_failed_units__++;
}

#if defined(ACUTEST_WIN__)
/* Callback for SEH events. */
static LONG CALLBACK
test_exception_filter__(EXCEPTION_POINTERS *ptrs)
{
    test_error__("Unhandled SEH exception %08lx at %p.",
                 ptrs->ExceptionRecord->ExceptionCode,
                 ptrs->ExceptionRecord->ExceptionAddress);
    fflush(stdout);
    fflush(stderr);
    return EXCEPTION_EXECUTE_HANDLER;
}
#endif


static void
test_help__(void)
{
    printf("Usage: %s [options] [test...]\n", test_argv0__);
    printf("Run the specified unit tests; or if the option '--skip' is used, run all\n");
    printf("tests in the suite but those listed.  By default, if no tests are specified\n");
    printf("on the command line, all unit tests in the suite are run.\n");
    printf("\n");
    printf("Options:\n");
    printf("  -s, --skip            Execute all unit tests but the listed ones\n");
    printf("      --exec=WHEN       If supported, execute unit tests as child processes\n");
    printf("                          (WHEN is one of 'auto', 'always', 'never')\n");
    printf("  -E, --no-exec         Same as --exec=never\n");
    printf("      --no-summary      Suppress printing of test results summary\n");
    printf("  -l, --list            List unit tests in the suite and exit\n");
    printf("  -v, --verbose         Enable more verbose output\n");
    printf("      --verbose=LEVEL   Set verbose level to LEVEL:\n");
    printf("                          0 ... Be silent\n");
    printf("                          1 ... Output one line per test (and summary)\n");
    printf("                          2 ... As 1 and failed conditions (this is default)\n");
    printf("                          3 ... As 1 and all conditions (and extended summary)\n");
    printf("      --color=WHEN      Enable colorized output\n");
    printf("                          (WHEN is one of 'auto', 'always', 'never')\n");
    printf("  -h, --help            Display this help and exit\n");

    if(test_list_size__ < 16) {
        printf("\n");
        test_list_names__();
    }
}

#ifdef ACUTEST_LINUX__
static int
test_is_tracer_present__(void)
{
    char buf[256+32+1];
    int tracer_present = 0;
    int fd;
    ssize_t n_read;

    fd = open("/proc/self/status", O_RDONLY);
    if(fd == -1)
        return 0;

    n_read = read(fd, buf, sizeof(buf)-1);
    while(n_read > 0) {
        static const char pattern[] = "TracerPid:";
        const char* field;

        buf[n_read] = '\0';
        field = strstr(buf, pattern);
        if(field != NULL  &&  field < buf + sizeof(buf) - 32) {
            pid_t tracer_pid = (pid_t) atoi(field + sizeof(pattern) - 1);
            tracer_present = (tracer_pid != 0);
            break;
        }

        if(n_read == sizeof(buf)-1) {
            memmove(buf, buf + sizeof(buf)-1 - 32, 32);
            n_read = read(fd, buf+32, sizeof(buf)-1-32);
            if(n_read > 0)
                n_read += 32;
        }
    }

    close(fd);
    return tracer_present;
}
#endif

int
main(int argc, char** argv)
{
    int i;
    int seen_double_dash = 0;

    test_argv0__ = argv[0];

#if defined ACUTEST_UNIX__
    test_colorize__ = isatty(STDOUT_FILENO);
#elif defined ACUTEST_WIN__
 #if defined __BORLANDC__
    test_colorize__ = isatty(_fileno(stdout));
 #else
    test_colorize__ = _isatty(_fileno(stdout));
 #endif
#else
    test_colorize__ = 0;
#endif

    /* Count all test units */
    test_list_size__ = 0;
    for(i = 0; test_list__[i].func != NULL; i++)
        test_list_size__++;

    tests__ = (const struct test__**) malloc(sizeof(const struct test__*) * test_list_size__);
    test_flags__ = (char*) malloc(sizeof(char) * test_list_size__);
    if(tests__ == NULL || test_flags__ == NULL) {
        fprintf(stderr, "Out of memory.\n");
        exit(2);
    }
    memset((void*) test_flags__, 0, sizeof(char) * test_list_size__);

    /* Parse options */
    for(i = 1; i < argc; i++) {
        if(seen_double_dash || argv[i][0] != '-') {
            if(test_lookup__(argv[i]) == 0) {
                fprintf(stderr, "%s: Unrecognized unit test '%s'\n", argv[0], argv[i]);
                fprintf(stderr, "Try '%s --list' for list of unit tests.\n", argv[0]);
                exit(2);
            }
        } else if(strcmp(argv[i], "--") == 0) {
            seen_double_dash = 1;
        } else if(strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
            test_help__();
            exit(0);
        } else if(strcmp(argv[i], "--verbose") == 0 || strcmp(argv[i], "-v") == 0) {
            test_verbose_level__++;
        } else if(strncmp(argv[i], "--verbose=", 10) == 0) {
            test_verbose_level__ = atoi(argv[i] + 10);
        } else if(strcmp(argv[i], "--color=auto") == 0) {
            /* noop (set from above) */
        } else if(strcmp(argv[i], "--color=always") == 0 || strcmp(argv[i], "--color") == 0) {
            test_colorize__ = 1;
        } else if(strcmp(argv[i], "--color=never") == 0 || strcmp(argv[i], "--no-color") == 0) {
            test_colorize__ = 0;
        } else if(strcmp(argv[i], "--skip") == 0 || strcmp(argv[i], "-s") == 0) {
            test_skip_mode__ = 1;
        } else if(strcmp(argv[i], "--exec=auto") == 0) {
            /* noop (set from above) */
        } else if(strcmp(argv[i], "--exec=always") == 0 || strcmp(argv[i], "--exec") == 0) {
            test_no_exec__ = 0;
        } else if(strcmp(argv[i], "--exec=never") == 0 || strcmp(argv[i], "--no-exec") == 0 || strcmp(argv[i], "-E") == 0) {
            test_no_exec__ = 1;
        } else if(strcmp(argv[i], "--no-summary") == 0) {
            test_no_summary__ = 1;
        } else if(strcmp(argv[i], "--list") == 0 || strcmp(argv[i], "-l") == 0) {
            test_list_names__();
            exit(0);
        } else {
            fprintf(stderr, "%s: Unrecognized option '%s'\n", argv[0], argv[i]);
            fprintf(stderr, "Try '%s --help' for more information.\n", argv[0]);
            exit(2);
        }
    }

#if defined(ACUTEST_WIN__)
    SetUnhandledExceptionFilter(test_exception_filter__);
#endif

    /* By default, we want to run all tests. */
    if(test_count__ == 0) {
        for(i = 0; test_list__[i].func != NULL; i++)
            tests__[i] = &test_list__[i];
        test_count__ = test_list_size__;
    }

    /* Guess whether we want to run unit tests as child processes. */
    if(test_no_exec__ < 0) {
        test_no_exec__ = 0;

        if(test_count__ <= 1) {
            test_no_exec__ = 1;
        } else {
#ifdef ACUTEST_WIN__
            if(IsDebuggerPresent())
                test_no_exec__ = 1;
#endif
#ifdef ACUTEST_LINUX__
            if(test_is_tracer_present__())
                test_no_exec__ = 1;
#endif
        }
    }

    /* Run the tests */
    if(!test_skip_mode__) {
        /* Run the listed tests. */
        for(i = 0; i < (int) test_count__; i++)
            test_run__(tests__[i]);
    } else {
        /* Run all tests except those listed. */
        for(i = 0; test_list__[i].func != NULL; i++) {
            if(!test_flags__[i])
                test_run__(&test_list__[i]);
        }
    }

    /* Write a summary */
    if(!test_no_summary__ && test_verbose_level__ >= 1) {
        if(test_verbose_level__ >= 3) {
            test_print_in_color__(TEST_COLOR_DEFAULT_INTENSIVE__, "Summary:\n");

            printf("  Count of all unit tests:     %4d\n", (int) test_list_size__);
            printf("  Count of run unit tests:     %4d\n", test_stat_run_units__);
            printf("  Count of failed unit tests:  %4d\n", test_stat_failed_units__);
            printf("  Count of skipped unit tests: %4d\n", (int) test_list_size__ - test_stat_run_units__);
            printf("  ");
        }

        if(test_stat_failed_units__ == 0) {
            test_print_in_color__(TEST_COLOR_GREEN_INTENSIVE__, "SUCCESS:");
            printf(" All unit tests have passed.\n");
        } else {
            test_print_in_color__(TEST_COLOR_RED_INTENSIVE__, "FAILED:");
            printf(" %d of %d unit tests have failed.\n",
                    test_stat_failed_units__, test_stat_run_units__);
        }

        if(test_verbose_level__ >= 3)
            printf("\n");
    }

    free((void*) tests__);
    free((void*) test_flags__);

    return (test_stat_failed_units__ == 0) ? 0 : 1;
}


#endif  /* #ifndef TEST_NO_MAIN */

#ifdef __cplusplus
    }  /* extern "C" */
#endif


#endif  /* #ifndef ACUTEST_H__ */